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High efficient step graded Inx Ga1−x N/GaN superlattice solar cell 高效阶跃梯度 Inx Ga1-x N/GaN 超晶格太阳能电池
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-04-01 DOI: 10.1117/1.jnp.18.026002
Dickson Warepam, Khomdram Jolson Singh, Rudra Sankar Dhar
{"title":"High efficient step graded Inx Ga1−x N/GaN superlattice solar cell","authors":"Dickson Warepam, Khomdram Jolson Singh, Rudra Sankar Dhar","doi":"10.1117/1.jnp.18.026002","DOIUrl":"https://doi.org/10.1117/1.jnp.18.026002","url":null,"abstract":"The band-gap of InxGa1−xN can cover a wide range of electromagnetic radiation of the solar spectrum and offers a method for using it in photovoltaic solar cells. A solar cell structure consisting of InxGa1−xN/GaN superlattice (SL) piled up between p-GaN and n-GaN is modeled and simulated. The impact of variations in the indium mole fraction and step graded SL having different quantum well thicknesses are analyzed. The results indicate that high indium content leads to lattice mismatch, decrement of fill factor, and development of strain in the quantum wells that reduce the overall efficiency. To increase the efficiency of the solar cell, a step graded 20 SL with a 5 nm quantum well thickness is introduced, and the highest efficiency of 22.6% is obtained. The use of a step graded SL InGaN cell allows for constructing real structures with the possibility of obtaining the enhanced power conversion efficiency compared with a conventional quantum well solar cell using SILVACO TCAD.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"53 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140828281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Linear and nonlinear optical properties of laser-dressed V-shaped gallium arsenide/gallium arsenide antimonide/gallium arsenide quantum wells with different dressing parameters: a theoretical modeling 具有不同修整参数的激光修整 V 型砷化镓/砷化镓锑/砷化镓量子阱的线性和非线性光学特性：理论建模
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-04-01 DOI: 10.1117/1.jnp.18.026001
Sara Maleki, Azadeh Haghighatzadeh, Amin Attarzadeh
{"title":"Linear and nonlinear optical properties of laser-dressed V-shaped gallium arsenide/gallium arsenide antimonide/gallium arsenide quantum wells with different dressing parameters: a theoretical modeling","authors":"Sara Maleki, Azadeh Haghighatzadeh, Amin Attarzadeh","doi":"10.1117/1.jnp.18.026001","DOIUrl":"https://doi.org/10.1117/1.jnp.18.026001","url":null,"abstract":"A single GaAs/GaAsSb/GaAs quantum well having a valence band profile was described in this study using the V-shaped potential. An external static electric field (E-field) and a high-frequency intense laser irradiation were utilized to examine the first-order linear and third-order nonlinear optical properties. The theoretical modeling was achieved using a compact-density matrix and iterative process in a two-level system framework. The position-dependent effective mass approximation was applied to solve the Schrödinger equation and evaluating the energy states and their corresponding wavefunctions for the two lowest bound states within the quantum well’s valence band with regards to a heavy hole. We extended the investigation of the single V-shaped potential by incorporating the effects of the E-field, the well’s half-width, and antimony (Sb) content on optical characteristics. The study on the combined effects of the intense laser field and the mentioned factors revealed that the peak positions and amplitudes of the linear and nonlinear optical characteristics were strongly influenced by variation in the laser strength. Specifically, we observed, that under higher laser dressing parameters, the application of the electric field played an important role. This occurred when the impact of the well’s half-width and Sb content became prominent at values of lower laser-dressing parameters. It is significant to note that our findings will have potential real-world applications in photonics, optoelectronics, and related areas.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"44 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140571546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of high quantum yield nitrogen and sulfur co-doped carbon dots for sensitive detection of Cu2+ 制备用于灵敏检测 Cu2+ 的高量子产率氮硫共掺杂碳点
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-03-01 DOI: 10.1117/1.jnp.18.016011
YingTe Wang, SiRong Cheng, RongRong Wu, YuanYuan Zhang, BoHan Wang
{"title":"Preparation of high quantum yield nitrogen and sulfur co-doped carbon dots for sensitive detection of Cu2+","authors":"YingTe Wang, SiRong Cheng, RongRong Wu, YuanYuan Zhang, BoHan Wang","doi":"10.1117/1.jnp.18.016011","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016011","url":null,"abstract":"Nitrogen and sulfur co-doped green fluorescent carbon dots (G-CDs) with quantum yield (QY) of 28.26% were synthesized by hydrothermal method with p-phenylenediamine and thiosemicarbazone as precursors. The synthesized G-CDs exhibit good sensitivity and anti-interference ability for detecting copper ion (Cu2+) by fluorescence quenching (λex=390 nm, λem=535 nm) with a linear range of 20 to 200 μM and the limit of detection of 4.8 μM. This analytical method has been applied to detect Cu2+ of the local lake with good accuracy and recovery.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"158 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140105920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-suit doping Ta element in HNbWO6 nanosheets for enhancing photocatalytic performance 在 HNbWO6 纳米片中掺入 Ta 元素以提高光催化性能
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-03-01 DOI: 10.1117/1.jnp.18.016009
Jichao Zhu, Hongbo Zhao, Lifang Hu, Jie He
{"title":"In-suit doping Ta element in HNbWO6 nanosheets for enhancing photocatalytic performance","authors":"Jichao Zhu, Hongbo Zhao, Lifang Hu, Jie He","doi":"10.1117/1.jnp.18.016009","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016009","url":null,"abstract":"In this work, HNbxTa1-xWO6 (x=0, 0.3, 0.5, 1) nanosheets were successfully synthesized by an in-suit doping strategy at the molecular level and an exfoliation-restacking process. The crystal phase structures, surface morphologies, and chemical components of the obtained HNbxTa1-xWO6 nanosheets were systematically characterized by X-ray diffraction patterns, laser Raman spectroscopy, scanning electron microscopy, ultraviolet–visible diffuse reflectance spectroscopy and N2 adsorption-desorption measurements. The adsorption and photocatalytic degradation of RhB aqueous solution under dark and simulated sunlight irradiation were investigated, respectively. The adsorption results demonstrated that the large total pore volume and strong acidity are favorable for the adsorption of RhB, and the photocatalytic results showed that the introduction of Ta element greatly improved the photocatalytic activities of the as-prepared HNbxTa1-xWO6 nanosheets. Among the HNbxTa1-xWO6 nanosheets, HTaWO6 nanosheet has the highest photocatalytic activity for RhB degradation with a rate constant of 1.62×10−2 min−1. According to the photocatalytic result, it can be concluded that the use of in-suit doping to control the energy band structure is an effective method for designing efficient photocatalysts.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"2012 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140035780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Generation of all-optical Walsh–Hadamard code using silicon micro-ring resonator 利用硅微环谐振器生成全光沃尔什-哈达玛德码
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-03-01 DOI: 10.1117/1.jnp.18.016010
Manjur Hossain, Kalimuddin Mondal, Jayanta Kumar Rakshit, Surajit Mandal, Amit Kumar Goyal, Yehia Massoud
{"title":"Generation of all-optical Walsh–Hadamard code using silicon micro-ring resonator","authors":"Manjur Hossain, Kalimuddin Mondal, Jayanta Kumar Rakshit, Surajit Mandal, Amit Kumar Goyal, Yehia Massoud","doi":"10.1117/1.jnp.18.016010","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016010","url":null,"abstract":"Silicon micro-ring resonator-based generation of all-optical (2×2) Walsh–Hadamard code is proposed. The energy-efficient, ultra-high-speed, and compact nature of micro-ring resonator-based devices is essential for optical computing. Both MATLAB and the Ansys Lumerical finite difference time domain (FDTD) approach are used to implement the generation of all-optical (2×2) Walsh–Hadamard code. The proposed design is simulated at about 260 Gbps. In the recommended circuit, the needed pump power for switching is merely 0.84 mW, which is extremely little in contrast. The “figure of merits” of the proposed design is evaluated through numerical simulation. The obtained contrast ratio and extinction ratio are considerably greater at 25.24 and 14.63 dB, respectively. On the other hand, the achieved amplitude modulation of 0.13 dB is extremely low. The on-off ratio for a single micro-ring resonator is 36.9 dB.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"11 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140035481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-resonance coupled metal pattern metamaterial for selective thermal emission 用于选择性热发射的多共振耦合金属图案超材料
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-03-01 DOI: 10.1117/1.jnp.18.016012
Wei Li, Shenglan Wu, Chunhui Tian, Jiacheng Li, Shuang Liu, Genlin Wu
{"title":"Multi-resonance coupled metal pattern metamaterial for selective thermal emission","authors":"Wei Li, Shenglan Wu, Chunhui Tian, Jiacheng Li, Shuang Liu, Genlin Wu","doi":"10.1117/1.jnp.18.016012","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016012","url":null,"abstract":"With the continuous improvement of detection technology, higher requirements are put forward for infrared camouflage. Conventional low-emissivity materials have serious thermal instability, which increases the risk of detection. There is an urgent need to investigate more efficient infrared stealth materials. We design a metamaterial selective broadband emitter that utilizes multi-resonance coupling of metal patterns for infrared stealth. The proposed design exhibits low emissivity in the infrared atmosphere windows (3 to 5 μm and 8 to 14 μm) for infrared suppression and high emissivity in the non-infrared atmosphere window (5 to 8 μm) for radiative cooling. We introduce a supplementary design for high-temperature environments to meet a broader application need. Moreover, the low angle-dependence of the metamaterial emitter enables it to maintain broadband absorption characteristics even under large-angle incidence. This proposed approach serves as an effective supplement to the design of metamaterial broadband emitters and holds great potential for applications in infrared stealth, radiative cooling, thermal detection, sensors, thermophotovoltaics, and various other fields.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"66 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140314264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Q-factor multiple Fano resonance for sensitive refractive index sensors based on all-dielectric metasurface 基于全介电元表面的灵敏折射率传感器的高 Q 因子多重法诺共振
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-02-01 DOI: 10.1117/1.jnp.18.016007
Zuxiong Liao, Yiping Huo, Tong Liu, Chen Zhao, Tao Zhang, Congmu Xu, Zhongyue Zhang
{"title":"High-Q-factor multiple Fano resonance for sensitive refractive index sensors based on all-dielectric metasurface","authors":"Zuxiong Liao, Yiping Huo, Tong Liu, Chen Zhao, Tao Zhang, Congmu Xu, Zhongyue Zhang","doi":"10.1117/1.jnp.18.016007","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016007","url":null,"abstract":"High-performance sensors can be efficiently realized with an all-dielectric metasurface using high-Q-factor Fano resonance. In this study, a numerical analysis of an all-dielectric metasurface with two square holes and one rectangular hole was conducted. Multiple Fano resonances with a high Q-factor and modulation depth were excited by a toroidal dipole, an electric quadrupole, and a magnetic dipole by breaking the symmetry of the structure. According to the computed results, the modulation depth approached 100%, and the maximum Q-factor reached 90,048. The sensing performance of the structure is also discussed. The structure had a maximum sensitivity and figure of merit of 275 nm/RIU and 1833 RIU−1, respectively. Owing to the unique structure, multiple Fano resonances can be achieved, with applications in multiwavelength communication, multichannel nanosensors, and optical modulators. These resonances have high Q-factors, high modulation depths, and small linewidths.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"20 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
6H-SiC phoxonic microcavities with photonic and phononic bandgaps 具有光子和声子带隙的 6H-SiC 光子微腔
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-02-01 DOI: 10.1117/1.jnp.18.016006
Peiwen Gao, Jingzhi Wu, Yanhong Wang
{"title":"6H-SiC phoxonic microcavities with photonic and phononic bandgaps","authors":"Peiwen Gao, Jingzhi Wu, Yanhong Wang","doi":"10.1117/1.jnp.18.016006","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016006","url":null,"abstract":"Light propagation and acoustic vibrations can be controlled by designing the bandgap of phoxonic crystals, which support photonic and phononic bandgaps simultaneously. In this study, we numerically investigated the optical and mechanical properties of a clover-shaped 6H-SIC crystal microcavity. The results indicate that the frequency range of the phononic bandgap can be manipulated by adjusting the geometry of the structure, resulting in a wide phononic bandgap over 12 GHz centered at 30.8 GHz. The structure also supports strong localized optical modes for visible light with a Q-factor over 143. Within the photonic and phononic bandgaps of the phoxonic crystal, the structure can reduce mechanical vibrations and support a confined optical mode that can be used for trapping nanoparticles.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"155 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Guided-mode resonance sensors with high sensitivity and asymmetric structures 具有高灵敏度和非对称结构的导模共振传感器
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-02-01 DOI: 10.1117/1.jnp.18.016005
Hikmat Mohammed Hasan AlAameri, Mehrdad Shokooh-Saremi
{"title":"Guided-mode resonance sensors with high sensitivity and asymmetric structures","authors":"Hikmat Mohammed Hasan AlAameri, Mehrdad Shokooh-Saremi","doi":"10.1117/1.jnp.18.016005","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016005","url":null,"abstract":"An increasing amount of attention is being paid to guided-mode resonance (GMR) sensors since they can effectively detect small refractive indices (RIs) changes due to their narrow spectral linewidth and high efficiency. In this work, a binary, all-dielectric, asymmetric GMR (A-GMR) sensor structure with enhanced sensitivity and narrowed resonant linewidth is proposed to substantially improve the figure of merit (FOM) with respect to symmetric counterparts. To achieve the best performance, particle swarm optimization is employed to optimize the structural parameters. Furthermore, the proposed GMR sensor is compared with dielectric symmetric GMR sensors. High bulk sensitivity of 3157.6 nm/RIU, full width at half maximum down to 0.076 nm, and FOM of 41547.368 (RIU)−1 have been achieved for the A-GMR sensor, showing high-performance RI sensing.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"19 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement of absorption by incorporating aluminum triangular nanostructures into perovskite 在过氧化物中加入铝三角纳米结构增强吸收能力
IF 1.5 4区 物理与天体物理
Journal of Nanophotonics Pub Date : 2024-02-01 DOI: 10.1117/1.jnp.18.016004
Ziyu Chen, Xiangju Li, Cong Chen
{"title":"Enhancement of absorption by incorporating aluminum triangular nanostructures into perovskite","authors":"Ziyu Chen, Xiangju Li, Cong Chen","doi":"10.1117/1.jnp.18.016004","DOIUrl":"https://doi.org/10.1117/1.jnp.18.016004","url":null,"abstract":"Since the emergence of perovskite as an exceptional light absorbing material, it has made significant advancements in enhancing the efficiency of solar cells. Building upon this foundation, the reconfiguration of internal optical properties within perovskite holds the promise of further improving efficiency. We investigated the influence of metallic aluminum triangular nanostructures on absorption rates. Our findings indicate that the incorporation of stacked aluminum triangular nanostructures into perovskite thin films, along with controlled adjustments in the side length, can significantly enhance absorption rates. In conclusion, comparative tests revealed a remarkable 51% increase in the solar spectrum absorption rate for single layer perovskite thin film photovoltaic cells with a thickness of 200 nm.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"256 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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